DURABLE ACETAL CONSTRUCTION: This quick-connect union tee fitting is crafted from durable acetal material, ensuring superior strength and heat resistance for reliable performance. Designed to meet the demands of reverse osmosis water filter systems, it resists wear and maintains integrity under high-pressure plumbing conditions. This 5/16 push to connect fittings is perfect for water purifiers, undersink water filters, and home improvement projects. 5/16 FOOD-GRADE DESIGN: The acetal copolymer construction, combined with a food-grade nitrile O-ring, ensures safe use with potable liquids and food-grade water purifier systems. This quick connect union tee fitting is ideal for reverse osmosis water filters, providing clean and safe water for drinking and cooking. Compatible with 5/16-inch pipes or tubing, it delivers a secure, leak-free connection in water filter and home improvement applications. VERSATILE QUICK-CONNECT FITTING: Engineered for convenience, this quick-connect union tee fitting simplifies installation and maintenance. It connects seamlessly to 5/16-inch tubing, making it perfect for reverse osmosis systems, undersink water filters, and water purifiers. Whether you're upgrading plumbing for a home improvement project or installing a water line for a new water filter, this quick connect union tee fitting is the ideal solution. PERFECT FOR PLUMBING APPLICATIONS: This quick connect union tee fitting is designed for use in various plumbing setups, including water filters, reverse osmosis systems, and undersink water purifier units. Its universal 5/16-inch size and durable construction make it ideal for water line fittings in home improvement projects. Whether you're routing a water pipe or enhancing a water purifier system, this quick connect union tee fitting ensures a reliable connection. RELIABLE IN WATER PURIFIER SYSTEMS: Built for efficiency, this quick connect union tee fitting is designed to handle the demands of water purification systems. From reverse osmosis water filters to home water purifiers, its acetal material ensures compatibility with potable liquids. It securely connects 5/16-inch pipes, providing a long-lasting solution for revese osmosis water filters, undersink water purifications, plumbing, and home improvement project needs. Designed, manufactured and assembled in the UK by John Guest Speedfit. Connectors use a grip then seal collet arrangement. The female coupler is ideal for the connection of taps, and Toilets. Simply push the fitting fully onto the pipe and turn onto the thread. Should the need arise to demount the connection unlock the nut push the collet towards the body of the fitting and pull the pipe to release.